Application of band-pass filters in terahertz time-domain spectroscopy to study the morphological picture of biological tissue
Terahertz time-domain spectroscopy is the most common in the study of biological objects and obtaining morphological pictures. To improve the quality of morphological pictures, it is necessary to have THz radiation in a rather narrow frequency range. This study considers the change in the morphological picture of beef muscle tissue ex vivo in the frequency range from 0.2 to 1.5 THz. The polarization-sensitive filter developed in the framework of this study allows us to provide a fairly narrow band of THz radiation in this range. The paper presents the results of measurements of the amplitude-frequency characteristics, as well as absorption spectra of beef muscle tissue in two modes, with and without a band-pass filter.
« The reported study was funded by RFBR, project number 20-32-90104».
«The research was carried out with the support of grant under the Decree of the Government of the Russian Federation No. 220 of April 2010 (Agreement No. 075-15-2021-615 of 04 June 2021)».
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National Research Tomsk State University